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28 I. Profile of outstanding hill, showing lower beds, about opposite Profile. X corresponds approximately to base of Profile G, p. 20. Y corresponds to bed of 53, 54, + R6 on Profile A, p. 6. X contains bone fragments, Y good fossils (recorded on corresponding bed of profile J). 10'+ softer pink tuff with large indurated nodules near bottom Top of hill. 10ձ very hard massive pink tuff Pink im- Definite contact pure tuff. 35' pale yellow to pink Boundary? Tuffaceous clays. Gradation 10' Yellow clay, often mottled pink. Gradation 9' gray to yellowish tufaceous clay + tuff. Gradation 16' massive white tuff, less pure above and grading into clays. Sharp undulating contact {Yellow 65'� irregularly inter- clay bedded tuffaceous clays Pink, man- and tuffs, yellow to ganiferous pink. Yellowish clay + tuff 34� Massive impure Gradation white to buff tuff, somewhat streaked with limonite. Obscure Thick series of argiler fissilaires, slightly tilted. COLI-HUAPI 29 96. Notostylopid jaw. M1-3. Horizon of #79, profile p. 32. G.G.S. 11/6/30. 1 package. 28657 97. About a dozen isolated teeth etc. Surface lower tuff, as #77 + 79, p. 32. G.G.S. + J.H. 11/6/30. 1 package. 98. Ungulate up. jaw, 3 M�s, + 2 teeth same place but prob. not assoc. As #77. G.G.S. 11/6/30. 1 pack. 28832 99. Armadillo scutes + assoc. frags. Surely in place. As #77. G.G.S. 11/6/30. 2 pack- ages. 28481 100. Small ungulate jaw. As #77. G.G.S. 11/6/30. 1 package. 28672 101-200-C.S.W. Field Book. 101. Astraponotus jaw. Bottom lower chan- nel, profile p. 22. [This, 64, and other specimens noted from same level occur in a heavy conglomerate full of rolled bone fragments + single teeth with a few very fragile jaws]. J.H. 11/2/30. 29473 102. Notoungulate jaw. Same hor. as #101. J.H. 11/2/30. 29415